2691906 has 32 divisors (see below), whose sum is σ = 6220800. Its totient is φ = 760656.

The previous prime is 2691893. The next prime is 2691907. The reversal of 2691906 is 6091962.

It is a happy number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2691907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4195 + ... + 4793.

It is an arithmetic number, because the mean of its divisors is an integer number (194400).

2^2691906 is an apocalyptic number.

2691906 is an abundant number, since it is smaller than the sum of its proper divisors (3528894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2691906 is a wasteful number, since it uses less digits than its factorization.

2691906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 2691906 is about 1640.7028981507. The cubic root of 2691906 is about 139.1083812163.

The spelling of 2691906 in words is "two million, six hundred ninety-one thousand, nine hundred six".